Hummer Forums - Enthusiast Forum for Hummer Owners
Page 1 of 2
1
2
Show 40 post(s) from this thread on one page

Hummer Forums - Enthusiast Forum for Hummer Owners (https://www.hummerforums.com/forum/)
-   Hummer H2 (https://www.hummerforums.com/forum/hummer-h2-8/)
-   -   Hummer h2 P0300 engine misfire (https://www.hummerforums.com/forum/hummer-h2-8/hummer-h2-p0300-engine-misfire-43210/)

Tran 06-10-2020 09:48 PM
Hummer h2 P0300 engine misfire
 
https://cimg1.ibsrv.net/gimg/www.hum...6286fb7e8.jpeg
What is my car

bronxteck 06-11-2020 12:17 AM
according to your scanner it is a truck not a car and the manufacturer is HUMMER

hummerz 06-11-2020 04:48 PM
Originally Posted by Tran (Post 373949)
What is my car
Does it look like this?

https://cimg8.ibsrv.net/gimg/www.hum...437c5c5aa5.jpg

Tran 06-11-2020 09:55 PM
My car’s check engine light illuminates my dashboard.. It’s Hummer H2 2005.. I dont know what part in my car has something wrong?

hummerz 06-11-2020 11:22 PM
Dum Gai, Sum Ting Wong.

Tran 06-11-2020 11:31 PM
Originally Posted by hummerz (Post 373997)
Dum Gai, Sum Ting Wong.
What does that mean?

Mule 06-12-2020 08:04 AM
The ECM computer is telling you the engine is misfiring. You can hunt it down yourself or take to a mechanic. Typical issues are spark plug issue, coil pack issue, vacuum issue, fuel psi, crank or cam sensor issue, head gasket leak...
good luck

hummerz 06-12-2020 06:41 PM

GM P0300 Causes

  • Faulty or worn spark plugs
  • Faulty spark plug wires or coils
  • Faulty fuel injector
  • Vacuum leak
  • Low fuel pressure
  • Camshaft sensor defective
  • Crankshaft sensor defective
  • Engine timing off
  • Leaking head gasket
  • Low engine compression
  • Poor quality fuel

Tran 06-12-2020 07:19 PM
Originally Posted by Mule (Post 374007)
The ECM computer is telling you the engine is misfiring. You can hunt it down yourself or take to a mechanic. Typical issues are spark plug issue, coil pack issue, vacuum issue, fuel psi, crank or cam sensor issue, head gasket leak...
good luck
thank you!

Tran 06-12-2020 07:20 PM
Originally Posted by hummerz (Post 374014)

GM P0300 Causes

  • Faulty or worn spark plugs
  • Faulty spark plug wires or coils
  • Faulty fuel injector
  • Vacuum leak
  • Low fuel pressure
  • Camshaft sensor defective
  • Crankshaft sensor defective
  • Engine timing off
  • Leaking head gasket
  • Low engine compression
  • Poor quality fuel
thank you!


All times are GMT -5. The time now is 01:43 PM.
Page 1 of 2
1
2
Show 40 post(s) from this thread on one page


© 2024 MH Sub I, LLC dba Internet Brands